10 LED Retrofit Options Go Head-to-Head


Under a NY State grant, the Village of Croton (a suburb of New York City) retrofitted the light fixtures in its town hall to LED. In the building’s 2nd floor corridor, 10 retrofit options were installed into identical fixtures: 7 involved different types of tubular LEDs (TLEDs), and 3 utilized different types of retrofit kits. Various characteristics were monitored, measured, and logged for comparison.

While all retrofits yielded comparable energy and utility cost savings, this work yielded several lessons from which other facility and energy professionals may benefit. Among them were:

– when energy savings among the retrofit options are about the same, equipment and installation cost differences among the options may significantly impact payback periods

– interactions between fixtures and their retrofits may impact both visual quality and performance

– some types of LED retrofits emit excessive non-visible flicker at frequencies that may trigger behavioral problems in autistic children and health issues in persons having photoepilepsy

– depending on a facility’s electric rate structure, inclusion of lighting controls as part of a LED retrofit may not be cost-effective, due to the greatly reduced wattage from retrofitting.

Presented By

Lindsay Audin, C.E.M., C.E.P., LEED AP
Energywiz, Inc.

Lindsay Audin is the president of Energywiz, Inc., a New York-based energy consulting firm. Energywiz has been serving large energy users, other consultants, government agencies, and energy suppliers, both in the U.S. and abroad.

Lindsay’s 40+ years in the energy services industry include 8 years as energy manager for Columbia University and 12 years with private engineering and energy consulting firms, prior to opening Energywiz in 1996. He holds certifications in energy management and energy procurement, and is a LEED Accredited Professional. Lindsay also teaches courses on power procurement, load profiling, and tariff analysis through the Association of Energy Engineers and the City University of New York. His book on “Lowering Your Facility’s Electric Rates” was published in 2017.

His awards include AEE’s International Energy Manager of the Year (1993), membership in the AEE Energy Manager’s Hall of Fame (1996), and International Professional Development Award (2014). He is also a member of several editorial boards for energy and building-related publications. Over 200 of his columns and articles on energy issues have appeared in publications such as Engineered Systems, High Performing Buildings, Architectural Record, and Building Operating Management.